The Encyclopedia Americana, Volume 7Grolier, 1988 - Encyclopedias and dictionaries |
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Page 452
In arithmetic the operations of addition and multiplication are commutative ( for example , 7+ 4 = 4 + 7 ) but subtraction ... A binary operation in the set S is a rule , or operation , which assigns some element of S to every pair of ...
In arithmetic the operations of addition and multiplication are commutative ( for example , 7+ 4 = 4 + 7 ) but subtraction ... A binary operation in the set S is a rule , or operation , which assigns some element of S to every pair of ...
Page 760
Many of the industrial operations involved in the formation of copper into usable shapes involve extensive plastic ... This is quite important , since the final forming operation of many products does not require heating the copper ...
Many of the industrial operations involved in the formation of copper into usable shapes involve extensive plastic ... This is quite important , since the final forming operation of many products does not require heating the copper ...
Page 761
stantial change in the sequence has taken place in the process since explosives first began to be used in mining operations . Some recent applica- tions of automatic techniques to the ore handling phase of the mining operation have ...
stantial change in the sequence has taken place in the process since explosives first began to be used in mining operations . Some recent applica- tions of automatic techniques to the ore handling phase of the mining operation have ...
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